Nature, nurture and mystery

Y= G+E+Fw+X

Y=You    G= Genes     E= Environment      Fw= Free will       X=?

(Modern science teaches that we are who we are because of nature and nurture; genes and environment. It leaves out the X-factor because it is not possible to investigate with scientific methods. It leaves out serendipity, synchronicity, and mystery and can thus give you a complete scientific explanation of who you are.)

https://www.theguardian.com/science/2015/mar/19/do-your-genes-determine-your-entire-life